Pulling-over machine



C. M. BAGSHAW.

Patented July 19, 1921..

3 SHEETS-SHEET l- C. M. BAGSHAW.

PULLING OVER MACHINE.

APPLICATION FILED 05c. 20, 1919.

1 35 1 Q6 Patented July 19, 19210 3 SHEETS-SHEET 2.

ELI/J F/OZ c. M. BAGSHAW.

PULLING OVER MACHINE. APPLICATION map DEC-20,1919.

1,385, 1 O6, Patented J uly 19, 1921.

3 SHEETS-SHEET 3.

g 2,? WM

CHARLES MARTIN BAGSHAW, 0F LEICESTER, ENGLAND,ASSIGNOR TO THE GIMSON SHOE MACHINERY CO. LII /ITED, OF LEICESTER, ENGLAND, 'ACORPORATION OF GREAT BRITAIN.

PULLING-OVER MACHINE.

T 0 aZZ w 710m it may concern:

Be it known that l, CHARLES MA TIN BAG- SHAW, a subject of the King of Great Britain, of Leicester, in the county of Leicester, England, have invented an Improvement in or Relating to Pulling-Over Machines, of which the following is a specification.

This invention relates to pulling-over machines employed in the manufacture of boots and shoes and has reference to machines of the class whereindevices for gripping the upper are first actuated to stretch the upper about the last and are subsequently actuated to wipe-in the stretched upper which is then fastened by means of tacks inserted automatically.

In machines of this kind the actuation of the gripping devices to wipe-in the stretched upper is performed by power-driven means. 7

The most important operation however, is the preliminary actuation of the grippers ior stretching or setting the upper on the last. in some machines this actuation is effected by power-actuated means while in others the grippers are moved by a treadle.

Now in connection with the-pulling-over operation, various conditions arise when dealing with diderent classes of work, and

' it is recognized by those conversant with this important process'in boot and shoe manufacture, that while the preliminary stretch may be imparted in a certain way with advantage as far as some kinds of work are concerned, the method is not. suitable, and moreover, may even be to some extent detrimental, in other kinds or" work. For example, in dealing with the heavier class of work a preliminary stretch imparted by power-driven means may be an advantage in so far that it relieves the operator of a considerable amount of labor and enables the pulling-over operation to be performed quickly. In dealing with the lighter class or work however, it is preferable that the preliminary stretching operation shall be wholly or partly under the control ofthe operator in order that care may be GKBICISGd in obtaining a proper setting of the upper on the last, or that the preliminary stretch may be imparted to that degree, which in the judgment ot'the operator, is necessary for each boot or shoe.

Specification of Letters Patent. Patented July 19, 1921 Application filed ]December 20, 1919.

Serial No. 346,341.

The present invention comprehends a pulling-over machine which will meet the various requirements as regards the impartation of the preliminarystretch when dealing with diiierent classes of work. With such a machine the preliminary stretching or setting of the upper can'be carried out the movement of the upper grlpping devices for stretching the upper may 'be'effected partly by a treadle and partlylby power-driven means, or wholly by atreadle, or wholly by power-driven means, the 'subsequent movement of the gripping devices for wiping-in the stretched upper being brought about by power-driven means.

For example, according to one manner of using the machine, by operation of a treadle, the grippers maybe closed upon the work and moved to any desired extent to stretch the upper, the said treadleremaining unlocked during this operation so that the stretching effect is entirely underthe control of the operator. The machine may then be started and caused to perform part ofits cycle, which completes thestretching mechanically, if the stretching has not already been wholly performed by thetreadle operation. Upon this mechanical operation of the machine the treadle becomes locked when the machine stops, theoperator can inspect and, if necessary, adjust the upper. The machine is then again started and operates to wipe-in and tack the upper in the usual manner. In the above described preliminary stretching operation bytreadle the operator can, by an appropriate operation of the treadle, either just close the grippers on to the upper, or he can stretch the upper slightly over the last, or he'can stretch itto the full extent.

With the same arrangement, the machine may be used in another manner, viz, the whole of the preliminary stretching'may be performed by power-driven means, in which case, after the work has been laced inposition, the machine is started and mechanically performs its first cycle to stretch the upper V and then stops for inspection of the work instead of stopping for inspection of the work on completion of the stretching operation, it may bestarted to perform or complete the stretching operation and then im- 7 mediately wipe-in andtack the work.

According to another manner of using the machine, the initial stretch may be imparted to a desired extent by actuation of the treadle which becomes locked in any posi' tion it maybe .mov'edto, and then the machine may be started to mechanically wipein andtack the upper. in this casethe initial stretching of the upper is not influenced in any way by the power-actuated means, and themachine when started completes the whole of its cycle without stopping.

.To enablethe inventionto be clearly understood reference will be made in the following further description to the accompanying drawingsfwherein an organized ma chine embodying the invention is shown by way of example.

In the drawings Figurel is a side elevation of the machine.

. Fig. 2 is an end elevation viewed from the right of Fig. 1. V

Fig. 3 is a side elevation of part of the mechanism shown in Fig. 2 and is viewed from the right thereof.

Fig. 1 is a' fragmentary view showing some of the parts of Fig. 2 arranged for a differentoperation of the machine.

3 Fig. 5 is a plan of the parts shown in F 1g. 4- 1 i V t Fig. 6 is a side View of some of the parts shown inFig. 4 and is taken from the right of said figure. v

I Fig. 1 is drawn to a smaller scale than the other figures, and throughout the drawings like partsare designated by the same reference characters. 7

Referring to Figs. 1 and 2, the main frame 1 is attached to a base plate 2 which also carries an endv standard 3. Mounted in bearings on the frame 1 and standard 3 is a clutch shaft 1 adapted to impart, through the pinion 5 and gear wheel 6 (Fig. 1),

rotation to the machine shaft 7 The grippers shown at 8 and 9 are connected by actuating coupling rods 10, 11 to a bracket 12 ,arranged to slide up and down in a guide 13'on the front of the frame 1. By means of links, one of which is shown at 14, the bracket is connected to a treadle 15 fulcrumed at 16 in the frame 1. By means ofsprings, one of which is indicated at 17, the treadle is normally held in a raised position as shown, thereby, through the medium of the links 14, bracket 12 and couplings l0 and 11, holding the grippers in a raised and open position in readiness to receive the work. i

A part 18 of the treadle extending rearwardly beyond the fulcrum 16 is connected by the members 19, 20, 21 and a toothed rack 22(Figs. 1, 2 and 3) with a camoperated lever 23 pivotally mounted at 24 on the main frame 1. The rod 19 is slidable in the socket 20 which is rigidly secured to the rod 21. The rod 19 and socket 20 are normally locked together by a springpressed bolt 50 (Fig. 1) straddled by a forked arm 51 of a bell-crank 52 connected by a rod 53 to an arm 54 fast with a hand lever 55. When the telescopic parts 19, 20

are locked, the wholeconnection 19, 20, 21 is inextensible so that the 'treadle is operated by upward movement of the camoperated lever 23, but if after such operation it is necessary to adjust the work, the

hand-lever 55 is moved to cause the forked arm 51 to press against a collar 56 and wlthdraw the bolt 50 and thereby release the rod 19 from the socket 20, whereupon the grippers are raised by the springs 17. While these parts constitute a convenient form of connecting meansit is to be under stood that the present invention is not to be limited to such form as the operative connection between the treadle and the lever 23 and also the connection between said treadle and the grippers may be varied, it being understood that the connections are such that an actuation of the grippers will take place through the treadle from the lever 23.

v The lever 23 is actuated by a cam 25 (Figs. 1, 2, 1, and 5) on the machine shaft 7 said cam engaging a roller 26 on the lever for this purpose. The clutch pulley 27 (Fig. 1) is driven by a belt in the'usual manner and rotation of the shaft 4: is controlled by operation of the clutch member 28 this being effected by links 29 from a vertical slide 30 (Figs. 1 and 2) actuated by a connecting rod 31 and hand lever 32 the latter being fulcrumed at 33. The slide 30 is drawn downby springs 34. and in the normal, 2'. e. low position holds the clutch out of action. The machine shaft rises and falls. Pivotally mounted at 39,0n

thebloek 37 is apawl-40 adapted to engage after appearing. Fastwith the pawl 40 is a finger 41 which, whenithe lever .23 occupies a raised position as shownin Figs. 4, and 6, acts as a weight tohold thepawl 40 in engagement with the :rac krteeth, but which, upon the lever: 23 descending, makes contact with'a'stop 42-adjustably attached to the main frame. lzand isrthereby moved as indicatedin Fig. 3 to disengage :thepawl 4O fromtherack 22ztowrelease-the latter.

The rack '22 I has formed therethrough a hole 43 (Figs. 4 and 6) zandwthe b1ocld37 is provided with a hole 44. When by movement of therack through the, block the said holes 43 and44 are-broughtainto alinement, a pin 45may bevinserted as shown in Figs. 2, 3 and 5 to lockthe rackand blockpthis being required for certainmperationsof .the machine as will be described, later herein.

By reference to Figs. 2 and 4- it will be seen that the'disk 35-is provided with two gaps 46 and 47 For'a certain operation of the machine the gap 46 may be rendered noneffective by theinsertion of afilling-piece 48 (Fig. 4) therein. 7 r

The various 1 methods ofv operation of the machine made possible by themechanica'l arrangements referred to will .nowibe de scribed.

According to oneqexample the gap 46 in the disk 35 is left open as shown :in Fig. 2.

and the toothed rack 22 is fasten-edto the block37 in'the lever23 by insertion of the,

pin 45. When themachine isin the normal position, the roller 36 is inthe'gap 46 and after the work has been placed in position, the treadle 15 may be depressed; by the operator to close the grippers 8,9 upon the upper and move the grippers to any desired extent to stretch the upper. The depression of the treadle raises, by'means of the parts 18, 19, 20, 21 and 22, the lever23 and thus according to the extentof such depression lifts the roller 26 from the cam 25.

Owing to thelocking of the :rack22 to the block 37 by the pin 45, the'treadlewhen depressed as described remainsunlocked and is therefore entirely under the control of the operator. Upon actuation of the hand lever 32 the machineis started and, provid ing the hand lever is released when the shaft 7 commences drop into the gap 47 and stop themachine after it has performed this part of its cycle. During the rotation of the shaft 7 just referred=to,it will be observed by reference to Fig. 2 that the rising part of the cam 25 passes under the roller 26 and thatwhen the machine stops with the roller 36 in the gap 47 as shown in Fig. 4, the highest part 49 of-the said cam will occupy a position under the roller 26. It will therefore be underpart 49 of the cam 25.

to rotate, the roller 36 will stood that if by a (partial depression of the troadle15wthe. lever- 23 has b66111 partly raised before the machine is started, thecam will, as? it "rotates, pick up i the a roller 26 and complete the-liftingvofcthe lever23. Or if thetreadle has not been depressed at all,.the cam 25 wilLlift the lever entirely from normali position .(Fig. 2) (Fig. 4). Or on @the other hand if the treadleiha'sibeen depressed to ,such an extent as-to 'ir'npartvthe whole .ofthe stretch and fullyqraise the lever-.:23,-then the cain25 willqrotategidlyandits high part/49 will come into position underqthe roller 26 to hold upitherlever. andmaintain thepar'ts in the stretching position when the machine stops. c a

Thus ,it' willbe seen thatwith the same setting oflthemachine the stretching may be imparted'gpartiallyby the operator and tinished by power, or it may be imparted, wholly-by power, or it .rnay be imparted whollyibyzthe operator. With either of the three"; methods just mentioned the machine may be allowed to stop afterperforming the first partof itszcycle, oralternatively, insteadiofsstopping, it may, by holdin the hand lever 32 depressed: until the gap 4 l i has passed thewroller 36,;be'caused to run on andaperformthe whole of its operationby a" single cycle. 1

With the arrangement orf setting of the machine just described, the .treadle, if depressed by the-operator is; not held mechanically or (1088111013 become lockedin the depressed position until the machine has a performed the first 'zpartwof its cycle so as to bring thelhighi Jart 49 ofthecam 25 under the lever 23. lirlso inthe arrangement referred to and'by :reasonof the connection betweenthe'lever .23 and rack 22, the treadle is movedjtothe same extentat. each operation 1 for stretching the work.

In anothertarrangement 'of the. machine the; pin 45 is, withdrawn -1to :release the toothed'rack 22,-and the gap 46 is filled up by the .piece 48 as shown in Fig. 4. In this case thenormal position of the machine shaft 7 is that where theroller 36'occupies the gap .47 as shown, andin this position, as already described, the lever .23 is held raised in its highestposition by the high The toothed rack 22. occupies a'low [position inthe block 37 asshown in'Fig. -6when-the treadle 15 and the-connectedgrippers arein the normal raised position. a

After insertion iofthe worlgthe treadle is depressed by the operator to stretch the work to theextent desired vii-11d during such depression, the rack 22 is raised by tllQJPZlI'tS 18, 19, 20 and 21, through :the block 37 and becomes locked againstdownward movement by the. engagement of the pawl 40 with its teeth. Thus the treadle may bemovedwto a to the a raised position greater or "lesser extent as required by the work andis locked inwhatever position'it is moved to. 1 v j vWhen after the stretching operation has been performed by the operator the machine is set in motion by actuation of the hand lever 32, the lever 23 already held up by the highest part of the cam 25 is not raised when the shaft 7 rotates and consequently no further stretch is mechanically imparted.

The 1ever'23 remains raised whileithe con centric high part of the cam 25 passesunder the roller26 during which time the stretched upper is wiped-in and tacked. After this operation and when the lowpart of the cam 25 passes under the roller 26, the lever 23 upon the finger 41 comes moves down, where into contact with the stop 42 and disengages the pawl 40 from the rack 22. Upon the release ofthe rack 22 the springs 17 controlling the treadle immediately act to; return the treadle, grippersand rack to their normal position. As the gap 46 in the disk 35 is fillediby the piece 48 the vertical slide 30 is not allowed to descend to stop the ma; chine until the gap 47 comes into position under the roller 36. Thereforepreviously to the machine coming to rest the high part of the cam 25 passes under the roller 26 and raises the lever 23 to the high position and the pawl 40 reengages the toothed rack 22 in readiness to lock the treadle upon depression of the latter atthe next operation. I

It may beconvement to connect'the star ing handlever 32 to a secondtreadle (not shown) so that in somecases the machine may be started by an actuation of this treadle thus leaving the operator both his hands free to manipulate the work.

It will be understood that the actuation of c the upper gripping devices for the purpose of wiping-in the stretched uppertakes place mechanically by rotation of the machine shaft 7 after the upper has been stretched in the manner pulling-over, wiping,'and tacking mecha-' nisms will be found in the specification of United States Letters Patent N 0. 1293 162 dated February 4th, 1919. Claims: V r 1. A pulling-overmachine having upper grlpping devices, a treadle to move said de-f vices for stretching the upper, and power driven means to move said devices for stretching the upper, said machine being constructed and arranged so that-the'move' ment of the upper gripping devices for stretching the upper may be effected partly by the treadle and partly by the powerdriven means, or wholly by the treadle, or wholly by the'power-driven means, for the purpose described. i

hereindescribed, the present invention not being concerned with the par ticular mechanism for effecting such wiping-5 in movement. A full description of the 2. A pulling-over m aohine having upper gripping devices, a treadle and powerdriven means to move said devices for stretching the :upper, and powerrdriven means to move said devices for'vviping-in the stretched'upper, said machine being constructed and arranged so that the movement; of the upper gripping devices forstretching the upper may be effected partly by the'treadlev and partly by the power-driven means, or wholly by the treadle, or wholly-"bythe power-driven means, said devices being subsequently moved forwiping-in the stretched upper, for the purpose described 1 8. A pulling-over machine having upper gripping devices, a treadle: operable by the operator, connections between said treadle and gripping devices whereby the latter may be moved by -the treadle :for stretching the upper, power-driven means, connections between said poWer-driven means and the treadle whereby the latter may be actuatedby the power-driven means, for stretchingthe upper, and means-for controlling the operation of said power-driven means, the arrangement being such that the movement of the gripping devices for stretching the upper may be efi'ected partly by the treadle and partly by the'power-driven means, or wholly by the treadle, or wholly by: the power-driven 'means, for the purpose described. h V 7 =4. .A pulling-over machine having in combination upper gripping devices, -a treadle operable by 1 the operator, connections between the treadle and the ipping devices for'moving the latter to stretch the upper, power-driven means, connections between the power-driven means and the treadle" to actuate the latter for stretching the upper, further 7 power-driven means, and connections between same and the gripping devices for moving-the latter to wipe-in the stretched upper, the treadlebeing operable independently of the ower-driven means, for the purpose descri ed, f

5. A pulling over machine having, in combination, upper gripping devices, a treadle operable by the operator, connections between the treadle and the gripping devices for moving the latter to stretch the upper,

power-driven means, connections between the power-driven means and the treadle to actuate the latter for stretching the upper, further power-driven'means, connections between same and the gripping devices for moving the latter to wipe-in the stretched upper, and manual means for controlling the operation of the power-driven means, for the purpose described. 7,

6. A pulling-over machine having, in combination, upper gripping devices, a treadle operable by the operator, connections between the' treadle and the gripping devices for moving the latter to stretch the upper,

combination, upper gripping power-driven means, connections between the power-driven means and the treadle to actuate the latter for stretching the upper, further powendriven.means, connections between same and the gripping devices for moving the latter to wipe-in the stretched upper, manual means and automatic means for controlling the operation of the powerdriven means, substantially as and for the purpose described.

7. A pullingover machine having, in combination, upper gripping devices, a treadle operable by the operator, connections between the treadle and the gripping devices for moving the latter to stretch the upper, power-driven means, connections between said power-driven means and the treadle to actuate the latter for stretching the upper, the actuation of said treadle by the power-driven means being predetermined by the prior actuation of the treadle by the operator, means to control the operation of the power-driven means, and means to move the gripping devices for wiping-in the stretched upper, substantially as described.

8. A pulling-over machine having, in combination, upper gripping devices, a treadle operable by the operator, connections between the treadle and the gripping devices for moving the latter to stretch the upper, power-driven means, connections between said power-driven means and the treadle to actuate the latter for stretching the upper, further power-driven means for moving the gripping devices to wipe-in the stretched upper, means operatingautomatically to stop the machine after the action of the first mentioned power-driven means, and means operating automatically to stop the machine after the action of the second mentioned power-driven means, substantially as and for the purpose'described.

9. A pulling-over machine having, in

devices, a treadle operable by the operator, connections between the treadle and the gripping devices for movingthe latter to stretch the upper, power-driven means, connections between said power-driven means and the treadle to actuate the latter for stretching the upper, further power-driven means for moving the gripping devices to wipe-in the stretched upper, means operating automatically to stop the machine after the actuation of the first mentioned power-driven means, and manually operable means to hold said automatic controlling means out of action for the purpose described. v

10. A pulling-over machine having, in combination, upper gripping-devices, a treadle operable by the operator, connections between the treadle and the gripping devices fior moving the latter to stretch the upper, power-driven means, locking means,

dle operable by the operator,

and a device which renders the locking means inoperative and'at the same time connects the treadle with. the power-driven means so that it is actuated by the latter for stretching the upper, said device being removable to disconnect the treadle from the power-driven means and render the locking means operative so that they automatically lock the treadle when'it is depressed bythe operator to stretch the upper, substantially as and for the purpose described.

11; A. pulling-over machine having, in combination, upper gripping devices, a treadle operable by the operator,xconnections,

operation, and automatically acting means to control the operation of the power-driven means, substantially as and for the purpose described.

12. A pulling-over machinehaving, in

combination, upper gripping devices, a treaconnections between said treadle and the gripping devices for moving the latter to stretch the upper, power-driven means, locking means,

a device which renders the locking means inoperative and at the same time connects the treadle with the power-driven meansso that it is actuated by. the latter for stretch ing the upper, said device being removable to disconnect the driven means and render the locking means operative so that they automatically lockthe treadle when it is depressed by the operator to stretch the upper, manually operable means to put the operation, automatically acting means to control the operation of the power-driven means, and means to adjust the said .controlling means so that the'machineis caused to operate with a single cycle movement, substantially as and for the purpose described.

13. A pulling-over machine having, in combination, upper gripping devices, a treadle operable by the operator to move said devices to stretch the upper, a driven cam, means to put same into action, a lever moved by said cam, and connections between said lever and the treadle whereby the latteris actuated by the cam, such that the treadle can be operated indetreadle from the powerpower-driven means into,

two cycle movement or a the arrangementbeing the latter is actuated combination, upper gripping 'said devices to stretch the pendently of the cam, substantially as and for the purpose described.

14. A pulling-over machine having 1n combination, upper gripping devices, a treadle operable by the operator to move said devices to stretch the upper, a driven cam, a lever moved by said cam, connections between said lever and the treadle whereby by the cam, a second cam, intermediate connections operated thereby to move the gripping devices to wipe-in the stretched upper, a gapped disk rotatingin unison with the said cams, driving means, manually operable mechanismfor putting said driving means into operation, andmeans controlled by the gapped-disk to putlsaid driving means out of action, substantially as described.

.15. A pulling-over machine having, 1n

5 devices, an operable treadle and connections for moving upper, a driven cam, a lever moved by said cam, intermediate means between said lever and the treadle, a device to connect said lever with and disconnect it from said means so that the treadle is actuated by the driven cam or may be 7 operated independently thereof, means for automatically controlling the rotation of the cam, and locking means combined with said lever and said intermediate means, said locking means being rendered respectively inoperative and operative by the aforesaid device when the latter effects connection and disconnection between the lever and intermediate means, substantially as and for the purpose described.

16. A pulling-over machine having, in combination, upper gripping devices, an operable treadle and connections for moving said devices to stretch the upper, a driven cam, means for automatically controlling the rotationof the cam, a lever moved by said cam, intermediate means between said lever and the treadle, pawl and rack locking means combined with the lever and intermedlate means, and a devlce to ef fect connection andldlsoonnection between the lever and intermediate means and simultaneously render the pawl and rack means inoperative and operative tively so that the treadle is actuated cam or is operable independently thereof, substantially as and, for the purpose described. 7

17. A pulling-over machine having, in combination, upper gripping devices, an oplocking respecerable treadle and connections. for moving fi :Sfild devlces to stretch the upper, a cam to drive same, a cam on said moved by said cam, intermebetween said lever and the shaft, means shaft, .a lever diate means treadle, pawl and rack locking means combined with the lever andintermediate means, a device'to effect connection and disconnections between said 'ing clutch, a manually operable member to by the connection between the lever and intermediate means and simultaneously render the pawl and rack locking means inoperative and operative respectively, a second cam on the shaft, connections operated by said second cam 'to move the gripping devices for wiping-in the stretched upper, a slide frame controlling the driving means, manually'operable connections for moving said frame to start the machine, a roller on said frame, and a gapped disk on the cam shaft, said roller riding on said disk, substantially as and for the purpose described.

18. A pulling-over machine having, in combination, upper gripping devices, a treadle operable by the operator for moving said devices to stretch the upper, a driven cam, a lever moved by said cam, a pawl pivoted on said lever, atoothed rack slidable through the end of said lever and engaged by the pawl, connections between the rack and the treadle whereby the latter may be locked by the pawl after depression by the operator, a finger on the pawl, a stop with which said finger makes contact to disengage the pawl from the rack during movement of the lever, and a removable pin to lock the rack to the lever so that the pawl is rendered inoperative and the treadle is actuated by the lever, substantially as and for the purpose described.

19. pulling-over machine having, in combination, upper gripping devices, a treadle operableby the operator for moving said devices to stretch the upper, a cam shaft, a clutch for driving the same, a cam on said shaft, a lever moved by said cam, intermediate means between said lever and the treadle, pawl and rack locking means combined with the lever and intermediate and operative respectively, a second cam onthe cam shaft, connections operable by said second oamto move the gripping devices for wiping-in the stretched upper, a slide frame,

frame and the drivmove the frame in one direction to start the machine, springs to movesaid frame in the opposite direction to stop the machine, a roller on the frame, a gapped disk on the camshaft with which the roller on the frame cotiperates to effect stoppage of the machine at predetermined points in the cycle, and a removable lling piece for insertion into one of the gaps in the disk to render same inoperative and permit the machine to overrun the stopping place determinedby said gap, substantially as andfor the purpose described.

20. A pulling-over machine having upper gripping devices, a treadle operable by the operator to move said devices forstretching means to start said power-driven means, and automatic means to stop the machine at the 10 end of the tacking operation, substantially as and for the purpose described.

In testimony whereof, I have signed my name to this specification.

CHARLES MARTIN BAGSHAW. 

